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# Physics.activity
# Go eat an apple, Newton!
#
# Brian Jordan
# Modified from Alex Levenson's testbed
# Modified from Elements demos
import pygame
from pygame.locals import *
from pygame.color import *
import elements
from elements import Elements
def main():
# set up pygame
pygame.init()
size = (1200,900) # A - Any way of getting a lower resolution? Changing size?
#size = (1024, 768)
screen = pygame.display.set_mode(size)
clock = pygame.time.Clock()
# set up the world
world = elements.Elements((400,400)) # A - here?
world.renderer.set_surface(screen)
# set up enviornment
world.add.ground()
#world.add.wall((100, 100), (300, 300), 5)
#body=world.add.rect((900,300),width=300,height=25)
#world.add.joint(body)
# loop control
go = True
a = 0
jb1=jb2=jb1pos=jb2pos=None
# Main Loop: - processes key and mouse events, world update and draw
while go:
for event in pygame.event.get():
if event.type == QUIT or (event.type == KEYDOWN and event.key == K_ESCAPE):
# Quit the application -- bye bye!
go = False
elif event.type == KEYDOWN and event.key == K_SPACE:
# Pause with SPACE
world.run_physics = not world.run_physics
# Adds Mouse-->Object joints for grabbing/throwing objects
elif event.type == MOUSEBUTTONDOWN and event.button == 1:
# Add Mouse-->Object Joint if at an Object
bodylist = world.get_bodies_at_pos(event.pos, include_static=False)
if bodylist and len(bodylist) > 0:
world.add.mouseJoint(bodylist[0], event.pos)
elif event.type == MOUSEBUTTONUP and event.button == 1:
# Delete Mouse-->Object Joint
world.add.remove_mouseJoint()
# Uses Box2D mouse movement
elif event.type == MOUSEMOTION and event.buttons[0]:
world.mouse_move(event.pos)
# Adds Object-->Object joints for connecting objects
elif event.type == MOUSEBUTTONDOWN and event.button == 3:
# Connect bodies
jb1pos = event.pos
jb1 = world.get_bodies_at_pos(event.pos)
jb2 = None
jb2pos = None
elif event.type == MOUSEBUTTONUP and event.button == 3:
jb2 = world.get_bodies_at_pos(event.pos)
jb2pos = event.pos
if jb1 and jb2 and str(jb1) != str(jb2):
world.add.joint(jb1[0],jb2[0],jb1pos,jb2pos)
jb1 = jb2 = jb1pos = jb2pos = None
elif event.type == KEYDOWN:
if event.key == K_1:
#add a triangle
x,y = pygame.mouse.get_pos()
world.add.triangle((0,0),sidelength=40)
world.add.ball((x,y), radius=20)
elif event.key == K_2:
#add a circle
x,y = pygame.mouse.get_pos()
world.add.ball((100,0),radius=20)
#world.add.rect((100,0),width=40,height=20,angle=90)
#a+=10
elif event.key == K_3:
x,y = pygame.mouse.get_pos()
world.add.ball((200,0),radius=20)
elif event.key == K_4:
x,y = pygame.mouse.get_pos()
world.add.ball((300,0),radius=30)
elif event.key == K_5:
x,y = pygame.mouse.get_pos()
world.add.ball((400,0),radius=40)
elif event.key == K_6:
x,y = pygame.mouse.get_pos()
world.add.ball((500,0),radius=50)
elif event.key == K_7:
x,y = pygame.mouse.get_pos()
world.add.ball((x,y),radius=60)
#elif event.key == K_8:
# x,y = pygame.mouse.get_pos()
# world.add.ball((x,y),radius=20)
elif event.key == K_9:
# Add many triangles
x, y = pygame.mouse.get_pos()
for i in range(5):
for j in range(5):
world.add.triangle((x-i,y-j), sidelength=20)
#a+=10 # Rotate 10 degs
elif event.key == K_8:
#add many boxes
x,y = pygame.mouse.get_pos()
#for i in range(5):
# for j in range(5):
i = 0
for j in range(20):
world.add.rect((x-i,y-(j*500)),width=20,height=10,angle=a)
#world.add.ball((x,y-(j*500)),radius=60)
#a+=10
# Clear Display
screen.fill((255,255,255))
# Update & Draw World
world.update()
world.draw()
if jb1pos:
pygame.draw.line(screen,THECOLORS["red"],jb1pos,pygame.mouse.get_pos(),3)
# pygame.draw.aaline(screen,THECOLORS["red"],(0,0),(1200,900),20)
# Flip Display
pygame.display.flip()
# Try to stay at 30 FPS
clock.tick(30) # originally 50
x,y = pygame.mouse.get_pos()
# output framerate in caption
pygame.display.set_caption("x: %i | y: %i | elements: %i | fps: %i" % (x, y, world.element_count, int(clock.get_fps())))
if __name__ == "__main__":
main()
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